mysql query queue

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Laravel5.2 queue-driven expire parameter setting brings a recurring problem to the database driver

   ' Connections '  => [    ....          ' database '  => [              ' driver '  =>  ' database ',              ' table '  =>  ' Jobs ',             ' Queue '  =>  ' default ',             ' Expire '  => 60,        ],          ' Redis '  => [   

High Performance MySQL Reading Notes-query performance optimization, high performance mysql

High Performance MySQL Reading Notes-query performance optimization, high performance mysql For high-performance database operations, it is not enough to design the optimal database table structure and build the best index. You also need to design

High-performance MySQL reading notes-query performance optimization

For high-performance database operation, it is not enough to design the optimal library table structure, and to establish the best index, but also need reasonable design query. If the query is poorly written, high performance cannot be achieved even

Mysql database locking mechanism detailed introduction _mysql

Objective In order to ensure consistent integrity of data, there is a locking mechanism in any database. The quality of locking mechanism should be directly thought of the concurrent processing ability and performance of a database system, so the

mysql--Query Performance optimization

Why queries are slow Slow Query Basics: Optimizing data access Verifying that an application is retrieving a large amount of data that is more than needed usually means accessing too many rows, but sometimes it may be too many columns

MySQL Study Notes summary, mysql Study Notes

MySQL Study Notes summary, mysql Study Notes Slow SQL: A Query whose execution time exceeds the specified time range is called a slow query.In MySQL, how does one record slow SQL statements?A: You can set the following information in my.

Laravel 4.2 Squadron Queue Service (queue) Experience _php instance

This half month, I was involved in rewriting a micro-credit back-end system, using Laravel 4.2 for the first time, and Laravel's proud queue service. Because the whole system involves multi-terminal interaction, and a large number of voice

How MySQL query optimizer works

In the manual, the query optimizer provides an overview of the tasks of the query optimizer, which is the best solution for discovering the execution of SQL queries. Most query optimizers, including the MySQL query optimizer, always search for the

MySQL query performance optimization

Abstract: This article describes how to optimize SQL queries. You can manually use the EXPLAIN statement to check the efficiency of SQL queries. In addition, some principles for optimizing SQL statements are described, mainly about how to optimize

MySQL configuration file my. CNF settings

Recommended settings: For a single running web server, we recommend that you add: Skip-locking Skip-name-resolve Skip-networking Use "localhost" when connecting to the database in PHP. In this way, the mysql client library will overwrite and try to

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